Add support for Protocol Buffers

[gfronza]

The client and server should support Protocol Buffers (https://developers.google.com/protocol-buffers/).

Although protobuf is technically supported (everything is a byte array after all), we should have better ways to handle it, as we do with JSON.

[gunjan01]

Hi @gfronza! I would like to give this a shot

[gfronza]

Hi @gunjan01, sounds good! Please also keep @skrater on cc as he's leading this project now.
Thanks for your initiative, let us know if you need anything from our side.

[gunjan01]

@gfronza @skrater Sure. Thanks a lot for the support !